Giant converse magnetoelectric effect in a multiferroic heterostructure with polycrystalline Co2FeSi

被引：21

作者：

Fujii, Shumpei ^{[1
]}

Usami, Takamasa ^{[2
]}

Shiratsuchi, Yu ^{[2
,3
]}

Kerrigan, Adam M. ^{[4
]}

Yatmeidhy, Amran Mahfudh ^{[5
]}

Yamada, Shinya ^{[1
,2
]}

Kanashima, Takeshi ^{[1
]}

Nakatani, Ryoichi ^{[2
,3
]}

Lazarov, Vlado K. ^{[4
]}

Oguchi, Tamio ^{[2
]}

Gohda, Yoshihiro ^{[2
,5
]}

Hamaya, Kohei ^{[1
,2
,6
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Dept Syst Innovat, 1-3 Machikaneyama, Toyonaka, Osaka 5608531, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Ctr Spintron Res Network, 1-3 Machikaneyama, Toyonaka, Osaka 5608531, Japan

[3] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Suita, Osaka 5650871, Japan

[4] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[5] Tokyo Inst Technol, Dept Mat Sci & Engn, J1-3 Nagatsuta Cho 4259, Yokohama, Kanagawa 2268502, Japan

[6] Osaka Univ, Inst Open & Transdisciplinary Res Initiat, Div Spintron Res Network, Suita, Osaka 5650871, Japan

来源：

NPG ASIA MATERIALS | 2022年 / 14卷 / 01期

关键词：

SPIN; MAGNETIZATION; SPINTRONICS; LOGIC;

D O I：

10.1038/s41427-022-00389-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To overcome a bottleneck in spintronic applications such as those of ultralow-power magnetoresistive random-access memory devices, the electric-field control of magnetization vectors in ferromagnetic electrodes has shown much promise. Here, we show the giant converse magnetoelectric (CME) effect in a multiferroic heterostructure consisting of the ferromagnetic Heusler alloy Co2FeSi and ferroelectric-oxide Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PMN-PT) for electric-field control of magnetization vectors. Using an in-plane uniaxial magnetic anisotropy of polycrystalline Co2FeSi film grown on PMN-PT(011), the nonvolatile and repeatable magnetization vector switchings in remanent states are demonstrated. The CME coupling coefficient of the polycrystalline Co2FeSi/PMN-PT(011) is over 1.0 x 10(-5) s/m at room temperature, comparable to those of single-crystalline Fe1-xGax/PMN-PT systems. The giant CME effect has been demonstrated by the strain-induced variation in the magnetic anisotropy energy of Co2FeSi with an L2(1)-ordered structure. This approach can lead to a new solution to the reduction in the write power in spintronic memory architectures at room temperature.

引用

页数：11

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